JP2550817Y2 - Moderation push-on switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATIONS The present invention is used by being mounted on a printed circuit board as a switch for switching various signals of consumer and industrial electronic devices.
The present invention relates to a moderation push-on switch that is operated in parallel with a printed circuit board surface.

2. Description of the Related Art A conventional technique will be described with reference to a sectional view of a push-on switch with a moderation shown in FIG.

In FIG. 1, reference numeral 1 denotes a plastic switch case having an opening on one side, and an outer fixed setting 4 and an inner fixed contact 5 which are respectively integrated with circuit connection terminals 2 and 3 protruding linearly from the side surface thereof. Are provided on the bottom surface by insert molding. Reference numeral 6 denotes a dome-shaped movable contact made of an elastic metal plate, the outer peripheral end of which is always in contact with the outer fixed contact 4 for conduction. Reference numeral 7 denotes a push plate for driving the movable contact 6, and 8 holds the push plate 7 to protect the inside of the switch case 1 and cover the opening of the switch case 1 with a plurality of projections 1 a of the switch case 1. A metal cover having a hole which is fixed and fixed so as to protrude outward from the head of the push plate 7, and 9 is fixed by a plurality of projections 1b on the bottom surface of the switch case 1 to push the switch. This is a fitting having a mounting portion 9a for mounting a switch on a printed circuit board arranged in parallel with the operation direction. Next, the operation of the push-on switch will be described.

First, when the push plate 7 is pressed, the central portion of the movable contact 6 is depressed with moderation, and comes into contact with the inner fixed contact 5, so that the outer fixed contact 4 and the inner fixed contact 5 via the movable contact 6.
Is electrically connected, that is, the terminals 2 and 3 are electrically connected, and the switch changes from the open state to the closed state. Next, when the force for pushing the push plate 7 is removed, the movable contact 6 is restored to the original dome shape with moderation, the contact with the inner fixed contact 5 is cut off, and the switch is changed from the closed state to the open state. The mounting portion 9a provided on the metal fitting 9 is inserted into a hole of the printed circuit board, a switch is mounted by soldering, and the mounting portion 9a receives a pressing force at the time of a push operation.

However, in the above-described conventional push-on switch with moderation, as shown in FIG.
Are separately provided, the static electricity generated by the switch operation and accumulated on the push plate 7 cannot be grounded, and there is a possibility that a microcomputer mounted on an electronic device or the like may be destroyed. Due to the backlash when it is fitted to the projection 1b on the bottom of the switch case 1, the bracket and the switch are not completely fixed, and play occurs between the switch and the bracket, and the switch moves slightly when pushing and operating the push plate 7. There was a problem that there is.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a hook for fixing a switch to a metal fitting, secures the metal fitting with a plurality of projections of a switch case, and further includes a nail provided on the metal fitting. It is designed to cover up to the cover.

Operation Therefore, according to the present invention, by providing the hook to the cover to the metal fitting, the metal fitting and the switch can be completely fixed, and the static electricity accumulated on the push plate can be grounded from the mounting part of the metal fitting. In addition, a microcomputer mounted on an electronic device or the like will not be destroyed by static electricity.

Embodiment A moderating push-on switch according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2, but the same parts as those in the prior art will be assigned the same reference numerals and description thereof will be omitted.

According to the drawing, reference numeral 10 denotes a metal fitting, which has a claw 10b protruding in a direction perpendicular to the mounting portion 10a inserted into the printed circuit board.

When the nail 10b is fixed to the switch case 1 by fixing the metal fitting 10, the protrusion 1b of the switch case is fixed,
It is bent toward the cover 8 and is fixed in contact with the cover 8. The claws 10b provided on the metal fitting 10 as described above
As a result, the static electricity is grounded to the printed circuit board 11 as shown by an arrow A in FIG. 2, and the hook 10b allows the metal fitting 10 to be mounted without play.

Effect of the present invention As is clear from the above embodiment, the present invention provides a claw protruding in a direction perpendicular to the mounting portion of the bracket, and the claw and the cover are brought into contact with each other by fixing the claw to the cover side. In addition, the static electricity accumulated on the push plate can be grounded to the printed circuit board, and the fittings and the switch can be completely completed.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a moderation push-on switch according to the present invention, FIG. 2 is an explanatory view for explaining the flow of static electricity of the moderation push-on switch, and FIG. 3 is a conventional moderation push-on switch. FIG. 4 is a cross-sectional view of the push-on switch, and FIG. 4 is an explanatory diagram for explaining the flow of static electricity of the push-on switch with moderation. 1 switch case, 2, 3 terminal part, 4 fixed external contacts, 5 fixed internal contacts, 6 movable contacts, 7 movable contacts
Push plate, 8 cover, 10 bracket, 10a mounting part, 10b claw.

Claims (1)

(57) [Scope of request for utility model registration] 1. At least a switch case, an outer fixed contact and an inner fixed contact which are mounted on the switch case, and one end of which is linearly protruded from a side surface of the case and serves as a terminal portion. A dome-shaped movable contact that is in contact with the contact, a cover that covers the opening of the switch case and protrudes the head of a push plate that drives the movable contact from the hole, and is inserted into the printed circuit board A moderating push that is formed by a fitting attached to the switch case and having a mounting portion and a tab that protrudes in a direction perpendicular to the mounting portion and that comes into contact with the cover by being fitted to the cover from the bottom side of the switch case. On switch.